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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**
 * Renderer for outputting the topics course format.
 *
 * @package format_topics
 * @copyright 2012 Dan Poltawski
 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 * @since Moodle 2.3
 */

defined('MOODLE_INTERNAL') || die();
require_once($CFG->dirroot.'/course/format/renderer.php');

/**
 * Basic renderer for topics format.
 *
 * @copyright 2012 Dan Poltawski
 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
class format_topics_renderer extends format_section_renderer_base {

/**
     * Constructor method, calls the parent constructor
     *
     * @param moodle_page $page
     * @param string $target one of rendering target constants
     */
    public function __construct(moodle_page $page, $target) {
        parent::__construct($page, $target);

// Since format_topics_renderer::section_edit_controls() only displays the 'Set current section' control when editing mode is on
        // we need to be sure that the link 'Turn editing mode on' is available for a user who does not have any other managing capability.
        $page->set_other_editing_capability('moodle/course:setcurrentsection');
    }

/**
     * Generate the starting container html for a list of sections
     * @return string HTML to output.
     */
    protected function start_section_list() {
        return html_writer::start_tag('ul', array('class' => 'topics'));
    }

/**
     * Generate the closing container html for a list of sections
     * @return string HTML to output.
     */
    protected function end_section_list() {
        return html_writer::end_tag('ul');
    }

/**
     * Generate the title for this section page
     * @return string the page title
     */
    protected function page_title() {
        return get_string('topicoutline');
    }

/**
     * Generate the section title, wraps it in a link to the section page if page is to be displayed on a separate page
     *
     * @param stdClass $section The course_section entry from DB
     * @param stdClass $course The course entry from DB
     * @return string HTML to output.
     */
    public function section_title($section, $course) {
        return $this->render(course_get_format($course)->inplace_editable_render_section_name($section));
    }

/**
     * Generate the section title to be displayed on the section page, without a link
     *
     * @param stdClass $section The course_section entry from DB
     * @param stdClass $course The course entry from DB
     * @return string HTML to output.
     */
    public function section_title_without_link($section, $course) {
        return $this->render(course_get_format($course)->inplace_editable_render_section_name($section, false));
    }

/**
     * Generate the edit control items of a section
     *
     * @param stdClass $course The course entry from DB
     * @param stdClass $section The course_section entry from DB
     * @param bool $onsectionpage true if being printed on a section page
     * @return array of edit control items
     */
    protected function section_edit_control_items($course, $section, $onsectionpage = false) {
        global $PAGE;

if (!$PAGE->user_is_editing()) {
            return array();
        }

$coursecontext = context_course::instance($course->id);

if ($onsectionpage) {
            $url = course_get_url($course, $section->section);
        } else {
            $url = course_get_url($course);
        }
        $url->param('sesskey', sesskey());

$controls = array();
        if ($section->section && has_capability('moodle/course:setcurrentsection', $coursecontext)) {
            if ($course->marker == $section->section) {  // Show the "light globe" on/off.
                $url->param('marker', 0);
                $highlightoff = get_string('highlightoff');
                $controls['highlight'] = array('url' => $url, "icon" => 'i/marked',
                                               'name' => $highlightoff,
                                               'pixattr' => array('class' => ''),
                                               'attr' => array('class' => 'editing_highlight',
                                                   'data-action' => 'removemarker'));
            } else {
                $url->param('marker', $section->section);
                $highlight = get_string('highlight');
                $controls['highlight'] = array('url' => $url, "icon" => 'i/marker',
                                               'name' => $highlight,
                                               'pixattr' => array('class' => ''),
                                               'attr' => array('class' => 'editing_highlight',
                                                   'data-action' => 'setmarker'));
            }
        }

$parentcontrols = parent::section_edit_control_items($course, $section, $onsectionpage);

// If the edit key exists, we are going to insert our controls after it.
        if (array_key_exists("edit", $parentcontrols)) {
            $merged = array();
            // We can't use splice because we are using associative arrays.
            // Step through the array and merge the arrays.
            foreach ($parentcontrols as $key => $action) {
                $merged[$key] = $action;
                if ($key == "edit") {
                    // If we have come to the edit key, merge these controls here.
                    $merged = array_merge($merged, $controls);
                }
            }

return $merged;
        } else {
            return array_merge($controls, $parentcontrols);
        }
    }
}